quiz 7

Question 1

If we are doing a non-directional test, how much of the critical region falls in each tail if our a = .05?

Answer 1

There is .025 or 2.5% in each tail.

Question 2

When a researcher concludes that the null hypothesis is false, the researcher is said to have _____ the null hypothesis.

Answer 2

rejected

Question 3

To get an idea of the actual size of what we found in our study, we can compute an ______.

Answer 3

Effect size

Question 4

If we hypothesize that our sample mean does not differ from the population mean, we have done what?

Answer 4

Stated the null hypothesis.

Question 5

We conduct our study and arrive at a p value of .0031. What conclusion do we draw?

Answer 5

We reject the null hypothesis.

Question 6

A non-significant outcome means that the data do not conclusively demonstrate that the null hypothesis is false.

Answer 6

True

Question 7

The hypothesis that an apparent effect is due to chance is called the _____.

Answer 7

Null hypothesis

Question 8

If a (significance level) is not explicitly specified, we can assume it is a = _____.

Answer 8

.05

Question 9

In hypothesis testing, the value corresponding to a specific rejection region is called the _____.

Answer 9

critical value

Question 10

A _____ error occurs when a significance test results in the rejection of a true null hypothesis.

Answer 10

Type I